Table 3. Fivefold cross validation $R^2$ values for the full model.

Sample Size	$k=1$	$k=2$	$k=3$	$k=4$	$k=5$
25	0.797	0.769	0.738	0.696	0.786
50	0.857	0.901	0.905	0.884	0.881
75	0.901	0.934	0.906	0.925	0.928
95	0.938	0.934	0.944	0.936	0.952
140	0.956	0.963	0.949	0.958	0.961
Mixed	0.849	0.847	0.849	0.852	0.858